Elevating means.



No. 862,791. 'PATENTED AUG.- 6, 1907. H. BAWDBN, W.,.HOSK IN (st-J. B.MERRITT.

ELEVATING MEANS.

APPLICATION FILED AUG. 25, 1906.

' 2 SHEETS-SHEBT 1.

. UNITED STATES PATENT OFFICE.

HERBERT BAWDEN, WILLIAM HOSKIN, AND JOSEPH B. MERRITT, OF CENTRAL CITY,

' COLORADO.

ELEVATING MEANS.

Specification of Letters Patent.

Patented Aug. 6, 1907.

Application filed August 25, 1906. Serial -332,023.

To all whom it may concern:

Be it known that we, HERBERT BAWDEN, WILLIAM HosKrN, and JosEPH B.Mnnnrrr, citizens of the United States, residing at Central City, in thecounty of Gilpin and State of Colorado, have invented certain new anduseful Improvements in Elevating Means; and we do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to elevating means, and more particularly toelevating means adapted to raise and lower and support the seat of apiano stool, foot stool, table or the like.

The object in view is the production of a piano stool, table or the likethat may have the upper surface thereof raised and lowered at will andsustained in any of its adjusted positions.

With these and other objects in view, the invention comprises certainnovel constructions, combinations and arrangements of parts, as will behereinafter fully described and claimed:

In the drawingsz-Figure 1 is a side elevation of a stool embodying thefeatures of my invention, certain parts being broken away to betterdisclose the operating mechanism, the adjustable part being shown in itsfarthest adjusted position. Fig. 2 is a side elevation of a stoolembodying the features of my invention with certain parts broken away tobetter disclose the operating mechanism, the adjustable portion of thestool being shown in its lowered position. Fig. 3 is a top plan view ofFig. 1 with the top removed to better disclose the operating mechanism.Fig. 4 is a top plan view of Fig. 2 with the top removed to better showthe operating mechanism. Fig. 5 is an enlarged detail view partly insection of the catch mechanism that holds the operating mechanism in itsadjusted positions.

This invention may be used on foot stools and tables, but is moreparticularly adapted to piano stools.

In the preferred embodiment of my invention we provide a stool having abody portion 1 with the usual supporting legs 2 of any desiredconstruction.

Mounted above the body. portion 1 is an adjustable seat 3 which may bemade of any desirable or convenient material.

Secured to the under side of the seat 3 are metal reinforcing strips 4and 5'that are adapted to accommodate journal bearings 66 and 77.Mounted between these journal bearings 66 and 77 are journals 8 and 9,which have rigidly secured thereto elevating levers 1010 and 1111. Thelevers 1010 are rigidly secured together at their outer ends by a crossbar 12 While the levers 11 are secured together by cross bars 13. Thelevers 1010 are curved at 14 so as to give a rounded surface 15 that isadapted to bear against the body portion 1 of the stool and be supportedthereby. The levers 11-11 are also bent in like manner at 16 so as toform a bearing surface 17 which also bears upon the body portion 1.

Pivotally secured at 18 is a lever 19 that has pivotally secured theretoconnecting links 20 and 21. Slots 22 and 23 are formed in the lever 19for accommodating the securing means of links 20 and 21 and allows thesame to be adjusted so as to give an equal throw to the connecting linkswhen the lever 19 is operated. The link 20 is pivotally secured to theconnecting bar 13 at 24, and the lever 21 is pivotally secured to theconnecting bar 12 at 25.

The lever 19 has an enlarged portion formed on one end thereof, in whichis mounted a latch mechanism. This latch mechanism, as will be clearlyseen in Fig. 5, has a spring-pressed bolt or latch 26 with an engaginglug 27 formed thereon. The enlarged portion is bifurcated at the ends,as at 28, and has secured between the bifurcations thereof a cam 29,which is adapted to force the bolt 26 against the spring 30, anddisengage the lug 27 from the rack 31; The rack 31 is formed on an arcwith the pivot 18 as a center, so as to accommodate the catch or lug 27in its movement. It is bent at 32 and 33 so as to have the tooth portionspaced above the main body portion 1 of the stool in order toaccommodate the end of the lever 19. By placing the lever 19 between thebody portion 1 and rack 31, the lever is held in its correct verticalposition at all times, without any auxil iary means for holding the samein position. Arbearing plate 34 is secured to the body portion 1 belowthe rack 31 upon which the lever 19 slides when being adjusted.

Secured to the body portion 1 are metallic strips 35 and 36, throughwhich reciprocate rods 3737 and 38 38, as will be clearly seen in Fig.2. The rods 3737 and 3838 are secured to the metallic strips 4 and 5 andare adapted to reciprocate in the apertures 39 formed in the body 1, andthe strips 3535 and 3636.

In operation, when it is desired to raise the seat 3 from the positionshown in Fig. 2 to the position shown in Fig. 1, or any intermediateposition, the handle 39 of the latch mechanism formed on the end oflever 19, is operated to disengage the latch from the rack 31, and thenthe lever 19 is swung on its pivot 18, carrying in its movement, thelinks 20 and 21, and thus drawing the lower ends of the levers 1010 and1111 toward each other, which, in turn, forces the seat 3 upward, thesame being guided in its movement by the rods 3737, and 38-38. When itis desired to lower the seat 3, the catch of the latch mechanism isdisen gaged from the rack 31, and the lever 19 is revolved until theseat has been lowered to the desired height and then the lug or catch 27is permitted to engage the rack 31. In case the seat is desired to belowered into its lowermost position, as shown in Fig. 2, the lever 19 isrotated until the levers 10l0 and 1111 have their ends resting againstreinforcing strips 40 and 41 extending transversely across the lowerface of the seat 3. By this mechanism, an adjustable stool or seat ismade that is readily and quickly adjusted to any height and the samehaving but few parts and no complicated mechanism whatever. By thisconstruction guide rods and a simple system of elevating levers areprovided which are not liable to easily get out of order or broken, butpermit ease and quick adjustment of the seat to any height desired.

We have described this invention as relating more particularly to pianostools, but we wish it understood that it may be applied with equaladvantage to foot stools, tables and the like, all within the spirit ofthis invention.

What we claim is:

1. In a device of the class described, the combination of a base, avertically movable member mounted upon the base, elevating means for themovable member, a lever actuating the elevating means, a rack, a latchcarried by the lever and engaging the rack, and a handle upon the leverprovided with a cam adapted to control the latch.

'2. In a device of the class described, the combination of a base, avertically movable member mounted upon the arms pivoted to the movablemember and bearing upon the base, lever adapted to actuate the arms, arack, a sliding bolt carried by the lever and provided with means forengaging the rack, and a handle upon the lever provided with a camadapted to control the latch.

4. In a device of the class described, a base, a vertically movablemember mounted upon the base, reversely inclined arms pivoted to themovable member intermediate its ends, and bearing upon the base adjacentits ends, a lever fulcrumed upon the base, links connecting the leverand arms, a rack mounted upon the base adjacent the lever, a latchcarried by the lever andengaging the rack, and a handle upon the leverprovided with a cam adapted to control the latch.

In testimony whereof we affix our signatures in presence of twowitnesses.

HERBERT BAWDEN. WILLIAM I'IOSKIN. JOSEPH B. MERRIIT.

Witnesses:

RICHARD TREVITHICK, PETER YOUNG.

